Humidifier unit



FIG. 1 is a perspective view of a humidifier unit taken from the top andfront portion thereof according to our design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a left side view thereof.

The ornamental design for a humidifier unit, as shown and described.